![TECO-Westinghouse A510 Instruction Manual Download Page 351](http://html.mh-extra.com/html/teco-westinghouse/a510/a510_instruction-manual_1072531351.webp)
4-276
SLV control mode:
The ASR function adjusts the output frequency to control the motor speed to minimize the difference between the
frequency reference and actual motor speed.
The ASR controller in SLV mode uses a speed estimator to estimate the motor speed. In order to reduce speed
feedback signal interference, a low-pass filter and speed feedback compensator can be enabled.
The ASR integrator output can be disabled or limited. The ASR output is passed through a low-pass filter.
20-00
20-02
20-01
20-03
20-08
Frequency
Reference
20-13
20-14
20-17
20-18
Speed
Observer
20-09
20-11
20-10
20-12
Motor Voltage
Motor Current
P
P
I
I
I Limit
Speed
Observer
Feedback
Speed
Feedback
Compensator
LP Filter
Observer
Error
20-07 = 1 (during accel/decel)
20-07 = 0
Speed Control Integral Reset
03-00 to 03-07 = 43
Primary
delay time
Torque
Limit
Torque
Reference
+
+
+
+
+
-
Figure 4.4.108 ASR block diagram (SLV mode)